Faber Castell Multimark 1513 Black Fine

The Faber Castell Multimark Pens are designed for use on non-porous surfaces such as glass, metal, acetate and plastic. As such, they are ideal for for marking out designs or labelling on any of these surfaces.
Comes with in-built eraser for removing any unwanted marks.
They are available in three sizes - Medium (approx. 2mm line), Fine (approx. 1mm line) and Superfine (approx. 0.5mm line).